Wattlab installs first full-scale Solar Flatrack System on MV Vertom Tula

Dutch solar technology company Wattlab has completed the first full-scale installation of its Solar Flatrack system on a seagoing vessel. The 7,280 dwt diesel-electric cargo ship MV Vertom Tula, operated by Vertom, is now equipped with 44 Solar Flatracks delivering 79 kWp of renewable power.

The system marks a major milestone in maritime decarbonisation and will supply energy to onboard systems, cutting up to 20% of the vessel’s hotel load. The installation follows two successful pilot projects between Wattlab and Vertom over the past three years.

Wattlab produced and assembled the units at its new Rotterdam facility. The solar racks were installed in a single day at the Port of Harlingen using twist-lock fittings, allowing quick mounting and removal when needed. According to Wattlab CEO Bo Salet, the setup maximises operational flexibility while preserving deck space for cargo.

Vertom, which operates more than 100 vessels in the short sea market, views the technology as a practical step toward cleaner operations. Trial data supported by research from TNO confirmed the system’s performance and return on investment under coastal shipping conditions.

Crew feedback has been positive, with the solar units proving easy to handle and requiring little maintenance. Wattlab’s solution has also earned industry recognition, including nominations at the IBJ Awards.

With regulatory pressure and fuel volatility driving demand for alternative energy sources, Wattlab says the successful deployment paves the way for wider adoption across coastal and short-sea fleets.

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